Question

This XML documentation seems to say that the ID derived type supports a pattern, but when I try to define one with this code:

      <complexType name="CourseType">
          <attribute name="courseNumber" type="ID">
              <pattern value="[A-Z]{2}(d{3}).(d{3})" />
          </attribute>
          <attribute name="numOfCredits" type="university:CourseCredits" />
          <element name="course_name" type="university:MixedName" />
          <element name="course_professor" type="string" />
      </complexType>>

...I get an error in the oXygen XML editor that says The content of courseNumber must match (annotation?, (simpleType?)). A problem was found starting at: pattern.

我对这一身份特征正确地界定我的图谋?

Answer 1

如果你需要限制所建的简单数据类型,你应自行创建simpleType。 http://www.w3.org/TR/xmlschema-2/#derivation-by-restriction”rel=“nofollow”>。类似情况:

<simpleType name= better-ID >
  <restriction base= ID >
    <pattern value= (d{3}).(d{3}) />
  </restriction>
</simpleType>

<complexType name="CourseType">
      ...
      <attribute name="courseNumber" type="better-ID"/>
      <attribute name="numOfCredits" type="university:CourseCredits" />
</complexType>

或您仅可插入simpleType:

   <complexType name="CourseType">
          ...
          <attribute name="courseNumber">
              <simpleType>
                  <restriction base= ID >
                     <pattern value= (d{3}).(d{3}) />
                  </restriction>
              </simpleType>
          </attribute>
          <attribute name="numOfCredits" type="university:CourseCredits" />
    </complexType>

www.un.org/Depts/DGACM/index_spanish.htm 并参看下文“jasso”的评论意见,以在您的科学、科学和技术部中确定一些其他错误。

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